@misc{indiciae63ab7c76320d,
  title = {Occurrence of pesticides in shallow groundwater of the United States: initial results from the National Water-Quality Assessment program},
  author = {Dana W. Kolpin and Jack E. Barbash and Robert J. Gilliom},
  year = {1998},
  doi = {10.1021/es970412g},
  url = {https://pubs.usgs.gov/publication/70020644},
  note = {Source identifier: 70020644}
}